<template>
    <div class="login-container">
        <div class="login-left">
            <img src="../assets/imgs/login_img.png">
        </div>
        <div class="login-box">
            <!-- 头像 -->
            <div class="avatar-box">
                <img src="../assets/imgs/login_logo.png">
            </div>
            <!-- 标题 -->
            <div class="title">
                电商后台管理系统
            </div>
            <!-- 登陆表单 -->
            <el-form ref="loginFormRef" class="login-form" :model="loginForm" :rules="loginFormRules">
                <el-form-item prop="username">
                    <el-input placeholder="请输入用户名" prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input placeholder="请输入密码" show-password prefix-icon="iconfont icon-3702mima" v-model="loginForm.password"></el-input>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" class="login-btn" @click="login">登陆</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data(){
        return {
            // 表单的数据绑定对象
            loginForm:{
                username:'admin',
                password:'123456'
            },
            // 表单的校验规则
            loginFormRules:{
                username: [
                    { required: true, message: '请输入登陆账户', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入登陆密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    methods:{
        login(){
            // 判断是否校验成功
            this.$refs.loginFormRef.validate(async valid => {
                if(!valid){
                    return
                }

                // 发送请求判断是否登陆成功 
                const {data:res} = await this.$http.post('login',this.loginForm)
                
                if(res.meta.status !== 200){
                    return this.$message.error('登陆失败');
                }

                this.$message.success('登陆成功')
                // 将用户信息保存到sessionStorage中
                sessionStorage.setItem('userInfo',JSON.stringify(res.data))
                this.$router.push('/home')
            })

        }
    }
}
</script>

<style lang="less" scoped>
.login-container{
    background: #93defe;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;

    .login-left{
        margin-right: 100px;
    }

    .login-box{
        width: 400px;
        height: 350px;
        background: #fff;
        padding: 50px;
        border-radius: 6px;
        box-sizing: border-box;
        position: relative;

        .avatar-box{
            width: 120px;
            height: 120px;
            border: 5px solid #93defe;
            border-radius: 100px;
            text-align: center;
            line-height: 110px;
            position: absolute;
            top: -60px;
            right: 140px;
            background: #fff;
        }

        .title{
            position: absolute;
            top: 100px;
            left:50%;
            transform: translate(-50%);
            font-size: 18px;
            color: #444;
        }

        .login-form{
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translate(-50%);
            padding: 0 20px;
            width: 80%;
            box-sizing: border-box;

            .login-btn{
                width: 100%;
            }
        }
    }
}    
</style>